Combination pump jack



F. RFOWENS; COMBINATION PUMP JACK.

I APPLICATION FILED JAN- 27,1922.

Patented Oct. 3, 1922.

3 SHEETSSHEET 1.

ATTORNEY WITNESS:

F. R. OWENS.

COMBINATION PUMP JACK.

APPLICATlON FILED JAN. 21, 1.922.

Patented Oct. 3, 1922.

3 SHEETS-SHEET?- J "5% azde/va E Z I IYf Z ATTO RNEY WITNESS:

F. R. OWENS.

COIVIBJNATION PUMP JACK. APPLICATION FIYLED JAN-27,1922.

mm W W m J J ATTORNEY WITNESS:

Patented @ch 35, 1922.

COIMBINATION PUMP JACK.

Application filed. January 27, 1922. Serial No. 532,313.

To ailw 710m it may 001mm:

Be it known thatl, FRANK ll. OWENS, a citizen of the United States, residing at Beaver Crossing, in the county of Seward and State of Nebraska, have invented new and useful Improvements in Combination Puniip Jacks, of which the following is a specification.

This invention relates toimprovements in a transmitting device, the general object of the in vcntion being to change the movement of an endless traveling member into a reciprocatory motion, so that a pump :or the like can beactuated from a rotary member.

Another obj cos of the invention is to provide trip means for reversing the movement of the reciprocatory member at each end of each stroke.

.This invention also consists in certain other features of construction and in the combination and arrangement'of the several pa to be hereina' or fully describechillui "ated in the actor anying drawings and specifically pointed out in the appended '1) l 21111 113. i i

in de ibing my invention in detail, referenee will .be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which lfigure 1 is a side view of the invention with parts in section.

Figure is section on line ure 1.

The remainin figures are detail views.

111 these views 1 indicates a casing which is in ioted to be suitably supported at the desi id location and in which is journaled a pair of shafts 2, one of which is adapted to be connected with any form of power device. Each shaft is provided with a pair of sprockets 3 over which the endless chains 1 pass. The upper shaft is adapted to be adjusted towards or away from the lower shaft so as to adjust the tension on the chains, this adjustment being permitted by making the openings 5, through which the shaft 2 passes, of larger diameter than the shaft and by placing the bearings of the shaft upon the plates 6 which are bolted to the casing. Guides 7 are formed upon the inner faces of the sides of the casing and plate 8 has its edges engaging said guides. This plate is located between the chains and is provided with an elongated slot 9 through which the 22 of Figupper shaft 2 passes. A bracket 10 extends from each side of the plate adjacent its lower end to support the ends of a shaft 11 which passes through the plate below the lower end of the slot. Sleeves 12 are rotatably mounted on this shaft, one on each side of the plate and each sleeve is provided with a pair of hook shaped projections 13 which are adapted to be engaged by the rollers 14: which are carried by the chains. These projections 13 are so arranged that the pair on one sleeve will be engaged by the rollers on one chain and the pair on the other sleeve will be engaged by the rollers on the second chain, the rollers on one chain engaging the projections on the upward stroke of the chain and the rollers on the other chain engaging the second pair of pro jections on their downward movement so that the plate is moved upwardly by one chain and downwardly by the second chain. A pair of lugs 15 project from each side of the plate and each pair slidingly supports a trip rod 16 which is normally held in raised position by the springl'Z. A stub shaft 18 projects from each sideof the plate and sleeve 19 is rotatably mounted on each shaft. A. pair. of arms 20. extend from each sleeve and a link 21 connects one arm with the trip'rod 16 and a link 22 connects the other arm with an arm 23 on each sleeve 12. These parts are so arranged that when the rollers engage projections 13 the sleeve 12 will be prevented from rotary movement by the link 22 due to the fact that its point of connection with the arm 20 is such that the link will be held against movement. However, as the plate nears the end of its stroke in either direction the trip rod 16 will strike the stationary trip rod 2 1, one of which is located at each end of the casing, so that the trip rod 16 will be moved longitudinally against the action of its spring and cause the link 21 to rock sleeve 19 and move the pivotal point of link 22 beyond a dead center thus permitting the sleeve 12 to rotate under the pressure of the rollers on the chain to permit the rollers to pass by said projections. Just as soon as these rollers are leaving the projections the rollers on the other chain will come into engagement with the projections on the other sleeve 12 and thus cause the plate to move in an opposite direction. Spring 17 will then move the parts of the disengaged trip rod to normal position. As

the plate nears the end of its other stroke the same action will be repeated on the second set of trip rods and their associated parts and then the plate will start on its upward stroke again. As shown in the drawings, each chain carries two'pairs of rollers so that the wardly twice for each revolution of the chain.

A connecting rod 26 is pivotally connected with the upper end of the plate by the pin 27.

From the above it will be seen that the plate will be given a reciprocatory movement by the moven'ient ol' the endless chains and this plate can be connected with a pump or the like to actuate the same.

In order to prevent movement of the parts by the strain placed thereon by the chains I connect the plates 6 with lugs 6 formed on the casingby the bolts'G. These bolts and the nuts will hold the plates against downward movement and said plates can be adjusted, as will be seen, to permit the ten sion on the chains to be varied.

I also provide a bracket 26 on the top or" the casing for engaging the rod 26 to stiffen the same when said rod is connected to the pumprod by an arm, such as shown at 26. In this case the device can be clamped on to the sideof the pump.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall with in the scope of the appended claims.

plate Will be moved up What I claim is 1. An apparatus of the class described comprising an oil tight casing, an endless traveling member therein, a member mounted for sliding movement in the casing, a rock'shaft on the reciprocatory member, a projection thereon adapted to be engaged by a part on the endless member, means for holding the rock shaft against movement so as to hold the projection in engagement with the said part on the endless member and trip means for releasing the rock shaft to permit the projection to give under the pressure of the said part.

2. An apparatus of the class described comprising a housing, a plate slidably supported therein, rocking members carried by the plate, a projection on each member, means for normally holding the members against rocking movement, trip means at the end of the housing for releasing the locking means so as topermit rocking movement of the rocking members and endless traveling members in the housing having parts thereon for engaging the projections.

3. An apparatus of the class described comprising a housing, a plate having sliding movement therein, rock shafts supported by the plate, a projection on each shaft, means for locking the shafts against rocking movement, trip rods for releasing the locking means, a trip device at each end of the housing for engaging the trip rods, a pair of endless traveling members in the housing and parts thereon for engaging the projections.

In testimony whereof I afiix my signature.

FRANK R. OWENS. 

